Serially Interfaced, 8-Digit LED Display Drivers
MAX7219/MAX7221
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND)
V+ ............................................................................-0.3V to 6V
DIN, CLK, LOAD,
CS
...............................................-0.3V to 6V
All Other Pins.............................................-0.3V to (V+ + 0.3V)
Current
DIG0–DIG7 Sink Current................................................500mA
SEGA–G, DP Source Current.........................................100mA
Continuous Power Dissipation (T
A
= +85°C)
Narrow Plastic DIP ..........................................................0.87W
Wide SO ..........................................................................0.76W
Narrow CERDIP.................................................................1.1W
Operating Temperature Ranges
MAX7219C_G/MAX7221C_G ..............................0°C to +70°C
MAX7219E_G/MAX7221E_G ............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = 5V ±10%, R
SET
= 9.53kΩ ±1%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Operating Supply Voltage
Shutdown Supply Current
Operating Supply Current
Display Scan Rate
Digit Drive Sink Current
Segment Drive Source Current
Segment Current Slew Rate
(MAX7221 only)
Segment Drive Current Matching
Digit Drive Leakage
(MAX7221 only)
Segment Drive Leakage
(MAX7221 only)
Digit Drive Source Current
(MAX7219 only)
Segment Drive Sink Current
(MAX7219 only)
SYMBOL
V+
I+
I+
f
OSC
I
DIGIT
I
SEG
∆I
SEG
/∆t
∆I
SEG
I
DIGIT
I
SEG
I
DIGIT
I
SEG
Digit off, V
DIGIT
= V+
Segment off, V
SEG
= 0V
Digit off, V
DIGIT
= (V+ - 0.3V)
Segment off, V
SEG
= 0.3V
-2
5
All digital inputs at V+ or GND, T
A
= +25°C
R
SET
= open circuit
All segments and decimal point on,
I
SEG_
= -40mA
8 digits scanned
V+ = 5V, V
OUT
= 0.65V
T
A
= +25°C, V+ = 5V, V
OUT
= (V+ - 1V)
T
A
= +25°C, V+ = 5V, V
OUT
= (V+ - 1V)
500
320
-30
10
-40
20
3.0
-10
1
-45
50
330
800
1300
CONDITIONS
MIN
4.0
TYP
MAX
5.5
150
8
mA
Hz
mA
mA
mA/µs
%
µA
µA
mA
mA
UNITS
V
µA
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
